Grinding pan for grinding machines for grinding clays, shales, and other dry and semidry materials



772 I 2 T. A. HIBBINS GRINDING PAN FOR GRINDING MACHINES FOR GRINDINGcans, SHALES, AND OTHER DRY AND SEMIDRY MATERIALS Filed March' 20, 19252 Sheets-Sheet mmww hhun un HU u Aug. 30

' T. A. HIBBINS GRINDING PAN FOR GRINDIN ACHINES FOR GRINDING CLAYSSHALES AND 0 R D AND SEMIDRY MATERIALS Fi March 20, 1925 2 Sheets-Sheet2 un- 4i} a WIIL I,

Patented Aug. 30, 1927.

2 UNITED, STATES PATENT OFFICE.

THOMAS A. HIBBINS, OF WELLSVILLE, OHIO, ASSIGNOR TO STEVENSON COMPANY,OF WELLSVILLE, OHIO.

GRINDING PAN FOR GRINDING MAOHiNES FOR GRIfi-DIN'G CLAYS, SHALES, ANDOTHER DIR-Y A-ND SEMIDRY MATERIALS.

Application filed March 20, 1925. Serial No. 16,993.

My invention relates to improvements in grinding pans for grindingmachines for grinding clays, shales, and other dry and semi-drymaterials. .1

The object of my invention is to providea grinding pan with means forsupporting a r m on its outer periphery, and having .a' yerticaladjustableliner carried by the rim, whereby the same can for varying thedistance between the lower edge of the liner and the pan, so that thespillway can be changed so that the size of the material can be changedto meet the conditions for which the material to be ground is to beused.

Another object of my invention is to provide a pan of this character inwhich the rim supporting brackets also serveas means 7 for supportingthe screen arranged between the outer face of the grinding pan and thelower edge of the rim, wherebythe rim,-.the screen or the grinding ringcan bereadil'y removed and replaced at will, when worn or otherwiseinjured.

A further object of my invention is to provide a rim carried by androtated-with the grinding pan, so that there will be'no friction betweenthe material on the. grinding pan and the rim, as'the same rotatestherewith, and also providing a liner with a smooth inner face sothatthe material will not be interfered with and will be thrown back on thegrinding plate under the mullers.

A still further object of my invention is to provide a: simple, "cheapand effective grinding pan of this character adapted-to be used incombination with any type ofrmullers and having certain details ofstructure and combination of parts hereinafter set forth. v V

In the accompanyingdrawings Figure 1 is a side elevation partly sectionof a grinding machine showing my 1111, proved grinding pan appliedthereto. Figure tional view of one side 'orf'the pan showing the rim andthe adjustable liner.

v Figure 3 is an edge view showing one of the rimsupportingbracketaandthe means of adjustab'ly holding the linerto the rim.

Figure 4 is topplan View of'a portion of the pan showing one of-thesupport ng be adjusted vertically.

discharged from the spillway shaft 12.

more fully- 2 is an enlarged transverse 'secunderstood, is of aicircularform and of diameter to extend out beyond .the' outer 'eclgesof themullers 31 and-'32. :Thenp'per brackets and the adjustable holding meansfor the liner. 7 Referring now to-the drawings, 1 represents the basewhich is preferably made of I concrete, and upon which are mounted thetwo metal frames 2 and 8, braced at their upper ends by the transverseframe a, clamped thereon by means of bolts 5, all of Whicn will be morefully shown and described, in my co-pending application Ser. No.25,885,fil ed April 25,1925,- as this frame forms no part of thisinvention. The transverse frame l, at the center is provided with abearing 6, in which is rotatably mounted a vertically disposed shaft 7,having its lower end mounted in the combination roller and thrustbearing 8, mounted upon the cement .bas'e t). This vertically disposedshaft 7 carries atits upper. end, a ring gear 10, meshing withthepinion'gear l1, keyed on the shaft 12. This pinion gear 11 is arrangedbetween the two bearings 13 and 14, supporting the mounted in thebearing 15, carried in the support 16, and said shaft isprovided with adrive pulley 17, loosely mounted thereon andconnected-thereto by meansof the clutch 18, operated through the clutch lever 19..

This structure is shownto illustrate an op- Theframes 2 and 3 areproinner ends of the shafts are carried by the downwardly disposed frame30, carried by the transverse frame 4. Mounted on the shafts 24 and 25are the mullers 31 and 32 The vertical, shaft 7 has rigidly securedthereon, adjacent its lowerv end, a hub 33,

pan 34, said grinding. pan 34, as is well face ofthe pan, adjacent itsouter edge, is

providedwith an annular recess 35 in which is bolted the grinding ring36, which is of a width greater .than'that of theinullers and The shaft12 has its outer end erative grinding machine and forms a part of thehereinbefore mentionedapplication/to be later filed. I vided with guideways 20 and 21, in Which are verticallynaovable mounted boxing 22 and23, carrying-the shafts and 25. The

, which is formed integral iwith-the grinding of a thickness equal tothe depth of the recess so that, the upper face of the pan and thegrinding ring are in a horizontal plane, and said grinding ring 36 isbolted upon the pan by means of bolts 37, all of which is clearly shownin Figures 1 and 2.

Secured to the lower face .of the pan, by means of three bolts 38, areeight outwardly extending brackets 39 of a shape to conform of thesebrackets it will be understood that 1 any desired number can be usedaccording to the character of work for which the machine is designed.The inner faces of the vertical portions 43 of the brackets are pro idedwith recesses 45 which are adapted to receive the rim 46, which isbolted thereto by means of bolts 47. The rim 46, at different points,around the periphery, is provided With the slots 48, through which thebolts 49 pass, and arranged on the inner face of the rim, is the'liner50 which has openings arranged therein through which the bolts 49 pass.The heads 51 of the bolts are counter sunk in the liner so that theirinner faces are flush With the inner face of the liner, as clearly shownin Figure 4 of the drawings. Screwed on the bolts 49 on the outside ofthe, rim 46, are the nuts 52, by means of which the liner is firmlyclamped to the inner face of the rim 46 in its adjusted position, thebolts being free to move vertically in the slots 48 when the nuts 52 areloosened,'whereby the spillway between the edge of the screen 41 and thelower edge of the liner may be varied according to the character of workthe machine is to perform; n

By this structure it will be seen that the liner takes care of all ofthe Wear caused by the clay being thrown outwardly by force against thesame, and it is an easy matter to replace the liner, and said liner alsohas a perfectly smooth inner face so not to interferewith the materialas it is thrown outwardly by force against the same. lVhile I have showna liner for the rim, it will be understood that the rim could bevertically adjustably supported by the brackets and perform the samefunction as the liner for varying the size of thespillway, withoutdeparting from my invention.

Having thus fully described my invention what I'claim is i 1.A' grindingpan of the. character described, comprising a flat horizontal rotatinggrinding surface, and an adjustable rim carried thereby on its outeredge for controlling the size of the spill way between the rim and thegrinding face. I i

2. A'grinding pan of the character de scribed comprising a flathorizontal rotating grinding surface, a vertically disposer platecarried by the pan, and avertically adjustable rim carried by the plateand cor; trolling the size of the spill way between the rim and thegrinding face.

3. A grinding pan of the 'thar'acter described comprising a flathorizontal rotating grinding surface, brackets carried by the grindingpan and having a vertically adjustable circular plate controlling thespill- Way from the grinding pan.

4. A grinding pan comprising a rotatable horizontal flat grindingsurface, brackets carried by the grinding pan and supporting EL'IIHI,and an ad ustable liner carried by the rim. 9 j 5. A grinding pancomprising a flat rotating grinding. surface,- brackets carried thegrinding pan, and a vertically adjustable plate carried by the bracketsfor controlling the size of the'spillway from the grinding pan. r

7 A grinding pan comprising fiat horizontal grinding surface, and avertically disposed adjustable plate carried by the outer edge of thepanfor controlling the size of the spillvvay'. 8. A grinding pan comprisinga flat'horizontal surface, a vertically adjustable plate carried by thepan beyondthe outer edge thereof, for controlling the size of the spillWay 1 9. A grinding pan comprising a fiat horizontal surface, a screensurrounding the outer edge of the pan, and a vertically disposedadjustable plate carried by the pan for controlling the size of thespillway between thescreen and the plate.

10. A grinding pan of the character described comprising a flathorizontal rotating grinding. surface, brackets carried by-the grindingpan, a screen supported by the brackets, a vertically disposedadjustable plate carried by the pan for controlling the size of thespillway between the screen-and the plate. 'j Y i 11. A grinding'pan ofthe character described comprising a flat horizontal rotating grindingsurface, brackets carried by the lower face of the grinding pan andextend ing out beyond the peripherythereof, and a vertically disposedadjustable plate carried a by the pan extending outwardly beyond the Isame, a screen supported by the brackets in a horizontal plane, and anadjustable plate I carried by the brackets for controlling the size ofthe spillway at the outer edge of the screen.

14. A grinding pan comprising a flat horizontal rotating grindingsurface, brackets carried by the pan and extending outwardly beyond theperiphery thereof, a screen carried by the brackets and surrounding thepan in a plane slightly below or on same plane as the pan, a rim rigidlycarried by the brackets, and a vertically adjustable liner carried bythe rim for controlling the ize of the spillway from the grinding pan.

15. A grinding pan comprising a flat rotating grinding surface, bracketscarried by the lower face thereof, a screen carried by the brackets andsurrounding the pan, and in a plane slightly below or level with thepan, a rim rigidly carried by the brackets above the plane of the pan,and a vertically adjustable liner carried by the rim and controlling thesize of the spillway from the screen.

16. A grinding pan comprising a flat horizontal rotating grindingsurface, brackets carried by the pan, a rim rigidly carried by thebrackets and having its lower edge in a plane above the plane of thepan, and a liner having bolts, the heads countersunk within the innerface of the liner, and passing through slots in the rim, whereby theliner can be adjusted I vertically for controlling the size of thespillway from the pan.

17. A grinding pan comprising a flat r0- tating grinding surface,brackets carried by the pan having vertically disposed outer ends, a rimrigidly carried by the outerfaces of the vertically disposed ends of thebrackets, and a liner vertically adjustably supported by the inner faceof the rim for controlling the size of the spillway from the grindingpan.

18.. A grinding pan comprising a flat horizontal member having" a ringlike grinding surface removably attached thereto, brackets bolted to themember below the grinding ring, and extending outwardly beyond the same,and having vertically disposed outer ends, a screen resting upon thebrackets, and the member on the outside ofthe ring, a rim rigidlysecured to the inner faces of the ver tically disposed ends of thebrackets, and a liner carrying bolts passing through vertical slots inthe rim, whereby the liner can be vertically adjusted for controlling.the size of the spillwav from the pan.

In testimony. whereof, I have signed this specification.

THOMAS A. HIBBINS. I

